May Day rally

Chung Sung-Jun / Getty Images

Labour union members hold up placards reading "We don't need this kind of president" during a May Day rally organized by the Korean Confederation of Trade Unions (KCTU) at the Seoul Railway Station on May 1, 2014 in Seoul, South Korea.

Labour union members hold up placards reading "We don't need this kind of president" during a May Day rally organized by the Korean Confederation of Trade Unions (KCTU) at the Seoul Railway Station on May 1, 2014 in Seoul, South Korea. (Chung Sung-Jun / Getty Images)

Labour union members hold up placards reading "We don't need this kind of president" during a May Day rally organized by the Korean Confederation of Trade Unions (KCTU) at the Seoul Railway Station on May 1, 2014 in Seoul, South Korea.